Kate cheered on Team GB as she watched them take home the bronze. They beat New Zealand in 3-1 win. This was their first medal in 20 years.
Dame Kelly Holmes joined the Duchess, and their group spent most of the match clapping and cheering as the British team played their hearts out on the turf below.
Kate had dressed for the warm weather in an all white outfit, swapping her skinny jeans and Smythe blazer for a ladylike A-line skirt and sleeveless Team GB kit shirt.
The Duchess wore the white skirt (designer has not been ID'd) multiple times pre-engagement. Above are two pictures taken in 2007 where Kate chose to wear her skirt.
Completing her outfit, The Duchess of Cambridge wore her white Hobbs 'Neston' belt and her navy Stuart Weitzman 'Corkswoon' wedges.
Kate wore her Givenchy sunglasses, her pearl stud earrings and her diamonds by the yard Tiffany bracelet.
Update 3/9/2013
Kate's skirt has been ID'ed (thanks to 'Tatiana's Delights on FB). It is by Zara from their Women's line.
An additional set of detailed pictures from 'My Obsessions' on FB.